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Finding the Fourth Proportional to 1,909,872, 2,864,995.11 and 695,778.66

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Solution

The fourth proportional to 1,909,872, 2,864,995.11 and 695,778.66 is: 1,043,736.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909,872 : 2,864,995.11 = 695,778.66 : x
  2. Step 2: Convert to fraction form
    1,909,872/2,864,995.11 = 695,778.66/x
  3. Step 3: Cross multiply
    1,909,872x = 2,864,995.11 × 695,778.66
  4. Step 4: Simplify right side
    1,909,872x = 1,993,402,458,542.35
  5. Step 5: Solve for x
    x = 1,993,402,458,542.35/1,909,872
  6. Step 6: Final answer
    x = 1,043,736.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.